If you own the original cartridge and want to play it on a modern screen, you can "dump" your own ROM file to use with an emulator. :

: My Boy! or the GBA core in RetroArch are popular choices.

: Look for the official Nintendo Seal of Quality and check for engraved numbers on the front label to avoid "repro" (counterfeit) cartridges. Method 2: Nintendo Switch Online (Potential)